William h



(No Model.)

W. H. NANKBRVIS.

LAMP.

No. 580,623. Patented Apr. 13, 1897.

UNITED STATES PATENT OFFICE.

WILLIAM H. NANKERVIS, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE v EDWARD MILLER & COMPANY, OF SAME PLACE.

LAMP.

SPECIFICATION forming part of Letters Patent No. 580,623, dated April 13, 1897.

Application filed October 19, 1894. Serial No. 526,346. (No model.)

To all whom t may concern.'

Be it known that I, WILLIAM H. N ANKERvIs, a citizen of the United States, residing at Meriden, New Haven county, Connecticut, have invented a new and useful Improvement in Lamps, of which the following is a specification.

My invention relates to a wick-adjusting device used chiefly in Argand lamps. It is intended to provide a simple ecient device for giving the wick either 'a delicate adjustment or a rapid considerable movement at the will of the operator.

In the accompanying drawings, Figure l represents in perspective and partly broken away so much of an Argand lamp as is necessary to show my device. Fig. 2, also in perspective, shows the operative parts of my device separately and detached from-the lamp.

The same letters refer to like parts in both views.

A designates a lamp fount or body; B, an inner wick-tube; C, a tubular wick-sleeve provided with socket c and latch c; D, an oifset formed with head CZ and nuts d and CZ",- E, a draw-bar screw-threaded at e; F, a screw provided with button f; Gf, a collar.

In the example of my invention illustrated in the drawings the fount A and inner wicktube B may be of any desired construction. The wick-sleeve C, as shown, is of a size to move freely on the tube B. It is provided with a socket c and an outwardly-springing tongue or latch c. It may also be provided with any convenient means for securing the adhesion of the wick.

The offset D is formed with a head d, adapted to engage with the socket c and to be retained in position by the tongue c. The nut CZ in the offset D is of ordinary form, while the nut d" has a plurality of threads, insuring a quick pitch. Thedraw-bar E has a screw-threaded portion e at its lower end adapted to engage with the nut d in the olfset D. At its upper end above the top of the fount A it may have a convenient handle. The screw Fis of quick pitch and adapted to move freely through the nut d" on the offset D. It passes up through the top of the fount A, and is preferably provided with a thumb-piece or operating-button fat its upper end. The collar G plays freely on the upper smooth neck of the screw F below the button f. It is eXteriorly screw-threaded to engage with a suitable opening in the top of the fount A, and when secured in place serves to confinel the screw F to rotary motion.

The method of assembling the various parts of my device and its operation will be readily understood from an inspection of the drawings. It is clear that the wick-sleeve C with the wick attached thereto may be vrapidly adjusted by a direct raising or lowering of the bar E, the vertical motion of the nut d in this case causing the idle rotation of the screw F; or by the rotation of the screw F and consequent vertical motion of the nut d the wick-sleeve C and the wick may be slowly and accurately adjusted. By the latter method the exact wick exposure required for a given flame may be secured, and by a direct thrust on the bar E the iiame may be quickly extinguished.

It will be seen that in the form of my device above described the lamp-bod y and the various parts of the wick-adjusting device may be finished before assembling and that a broken or damaged part may be readily replaced without disturbing the others. It is clear that this is non-essential to my invention and that other mechanical alterations may be made without departing from the spirit thereof.

I am aware of the existence of United States Patent No. 477,865, dated June 2S, 1892. In this is shown a wick-adjusting sleeve and a screw of high pitch connected therewith, so as to secure the advantage both of a delicate and a rapid movement of the wick. I do not of course wish to be understood as claiming anything shown or claimed in said patent.

What I claim as my invention, and desire to secure by Letters Patent of the United States, is as follows:

l. In a vwick-adjusting device in combination a tubular wick-sleeve, an offset detachably secured to said sleeve, a quick-threaded nut in said offset, a screw of high pitch adapted to move in said nut and a longitudinallymovable draw-bar operatively Vconnected with said offset, substantially as described.

2. In a wick-adjusting device in combina- IOO tion a tubular wick-sleeve, an offset detachably secured to said sleeve, a quick-threaded nut in said offset, a screw of high pitch adapted to move in said nut and a longitudinallymovable draw-bar detachably secured to said offset, substantially as described.

3. In a Wick-adjusting device in combination a tubular Wick sleeve provided With Ameans for securing the adhesion of the Wick thereto, an offset detachably secured to said sleeve, a quick-threaded nut in said offset, a screw of high pitch adapted to move in said nut, and a longitudinally-movable draw-bar detachably secured to said offset, substantially as described.

4. In alamp in combination a tubular Wicksleeve, an offset detachably secured to said sleeve, a quick-threaded nut on said offset, a Vscrew of high pitch passing through the top of the lamp and moving in said nut, means as a collar for preventing longitudinal motio'n of said screw and a longitudinally-movable draw-bar also passing through the top of the lamp and operatively connected with said Wick-sleeve, substantially as described.

5. In a lamp in combination a tubular Wicksleeve, an oset detachably secured to said sleeve, a quick-threaded nut in said offset, a screw of high pitch passing through the top of the lamp and moving in said nut, a button at the upper end of said screw, a threaded rotatable collar on said screw beneath said button, a threaded opening in the top of the lamp adapted to engage said collar, a second opening in the top of the lamp and a longitudinally-movable draw-bar passing through said second opening and detachably secured to said offset, substantially as described.

6. In a Wick-adj usting device in combination a Wick-sleeve, a socket on said sleeve open at its upper end, an offset With a head adapted to enter said socket and a springtongue on said Wick-sleeve adapted to engage with said head to prevent its accidental Withdrawal on said socket, substantially as described.

VILLIAM H. NANKERVIS.

Vitnesses:

GEO. L. COOPER, S. J. ROBY. 

